聚焦激光差分干涉法测量超/高超声速流动的进展  

Progress on focused laser differential interferometry in measuring supersonic/hypersonic flow field

作　　者：熊有德 余涛 薛涛 吴杰 XIONG Youde;YU Tao;XUE Tao;WU Jie(School of Aerospace Engineering,Huazhong University of Science and Technology,Wuhan430074,China)

机构地区：[1]华中科技大学航空航天学院,武汉430074

出　　处：《实验流体力学》2022年第2期9-20,共12页Journal of Experiments in Fluid Mechanics

基　　金：国家数值风洞(2018-ZT1A03);国家自然科学基金(92052301);中央高校基本科研业务费专项资金(2019kfyXKJC001)。

摘　　要：聚焦激光差分干涉法(Focused Laser Differential Interferometry,FLDI)作为一种非介入式高时空分辨率的测试手段,适用于高超声速风洞等极端实验环境。从典型FLDI的光路设计出发,介绍了FLDI技术的测量原理以及空间滤波特性;梳理了近年来国内外研究者为满足不同气动问题的研究需求,对典型FLDI技术做出的一系列改进;介绍了FDLI技术在超声速以及高超声速流场(包括高超声速自由流来流扰动、高超声速边界层不稳定波与转捩以及超声速射流噪声辐射等)测量中的应用。本综述展现了FLDI技术在超声速以及高超声速流场测量中的潜力,为后续开展FLDI技术的改进及相关高超声速流场精密测量提供参考。As a nonintrusive and high spatial/temporal resolution testing method,Focused Laser Differential Interferometry(FLDI)is very suitable for use in extreme experimental environment,such as hypersonic wind tunnel.Starting from the typical composition of the optical path,the principle of FLDI and the spatial filtering characteristics are introduced.Thereafter,a series of recent improvements based on typical FLDI is reviewed.Those improvements were implemented to meet different research needs.This is followed by applications and conclusions of FLDI in the field of hypersonic flow field measurement,including hypersonic freestream disturbance,hypersonic boundary layer transition,and supersonic jet noise.This review shows the potential of FLDI in supersonic and hypersonic flow field measurement,and it may provide reference for the follow-up improvement of FLDI testing technology and related precision measurement of hypersonic flow field.

关 键 词：聚焦激光差分干涉法 超/高超声速流场测量 自由流扰动 超声速射流 边界层转捩 

分 类 号：V211.74[航空宇航科学与技术—航空宇航推进理论与工程]